@article{GDZPPN001247700,
title = {Completely O-simple multiplicative ideals of rings.},
journal = {Semigroup forum},
volume = {2},
year = {1971},
pages = {362-370},
zbl = {0226.16022},
url = {http://dml.mathdoc.fr/item/GDZPPN001247700}
}
Lawson, L. Completely O-simple multiplicative ideals of rings.. Semigroup forum, Tome 2 (1971) pp. 362-370. http://gdmltest.u-ga.fr/item/GDZPPN001247700/